TIL the Python "walrus" operator:
https://www.quora.com/What-is-the-most-surprising-trick-in-Python-that-you-are-aware-of/answer/Jeffrey-Egbadon
Upstream docs: https://docs.python.org/3/reference/expressions.html#assignment-expressions
https://www.quora.com/What-is-the-most-surprising-trick-in-Python-that-you-are-aware-of/answer/Jeffrey-Egbadon
Upstream docs: https://docs.python.org/3/reference/expressions.html#assignment-expressions
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@highvoltage Not the best example of its use as if you use a for loop on the file handle itself (assuming it's opened in text mode) the iterator returns lines from the file anyway, and that's easier to read and more efficient than the readlines way of doing things.